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annotate dropbearkey.1 @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
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1 .TH dropbearkey 1
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2 .SH NAME
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3 dropbearkey \- create private keys for the use with dropbear(8) or dbclient(1)
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4 .SH SYNOPSIS
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5 .B dropbearkey
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6 \-t
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7 .I type
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8 \-f
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9 .I file
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10 [\-s
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11 .IR bits ]
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12 [\-y]
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13 .SH DESCRIPTION
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14 .B dropbearkey
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15 generates a
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16 \fIRSA\fR, \fIDSS\fR, \fIECDSA\fR, or \fIEd25519\fR
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17 format SSH private key, and saves it to a file for the use with the
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18 Dropbear client or server.
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19 Note that
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20 some SSH implementations
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21 use the term "DSA" rather than "DSS", they mean the same thing.
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22 .SH OPTIONS
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23 .TP
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24 .B \-t \fItype
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25 Type of key to generate.
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26 Must be one of
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27 .I rsa
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28 .I ecdsa
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29 .I ed25519
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30 or
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31 .IR dss .
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32 .TP
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33 .B \-f \fIfile
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34 Write the secret key to the file
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35 \fIfile\fR. For client authentication ~/.ssh/id_dropbear is loaded by default
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36 .TP
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37 .B \-s \fIbits
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38 Set the key size to
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39 .I bits
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40 bits, should be multiple of 8 (optional).
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41 .TP
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42 .B \-y
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43 Just print the publickey and fingerprint for the private key in \fIfile\fR.
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44 .SH NOTES
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45 The program dropbearconvert(1) can be used to convert between Dropbear and OpenSSH key formats.
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46 .P
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47 Dropbear does not support encrypted keys.
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48 .SH EXAMPLE
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49 generate a host-key:
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50 # dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key
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51
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52 extract a public key suitable for authorized_keys from private key:
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53 # dropbearkey -y -f id_rsa | grep "^ssh-rsa " >> authorized_keys
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54 .SH AUTHOR
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55 Matt Johnston ([email protected]).
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56 .br
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57 Gerrit Pape ([email protected]) wrote this manual page.
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58 .SH SEE ALSO
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59 dropbear(8), dbclient(1), dropbearconvert(1)
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60 .P
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61 https://matt.ucc.asn.au/dropbear/dropbear.html